intracavity absorption spectroscopy

intracavity absorption spectroscopy

[¦in·trə′kav·əd·ē əb¦sȯrp·shən spek′träs·kə·pē]

(spectroscopy)

A highly sensitive technique in which an absorbing sample is placed inside the resonator of a broad-band dye laser, and absorption lines are detected as dips in the laser emission spectrum.